body,p,ul,dl,ol,h1,h2,h3,h4,h5,h6,dt,dd{
    margin: 0;
    padding: 0;
}
ul,ol{
    list-style: none;
}
input{
    border: none;
    outline: none;
}
a{
    text-decoration: none;
}
/*命名规范：http://www.divcss5.com/jiqiao/j4.shtml#no2*/